Abstract:This paper presents the first results of the geostructural and tectonophysical studies of the crustal stress state in the Catoca kimberlite pipe area at the southwestern flank of the Kasai Shield in the northeasternAngola. In the evolution of the crustal stress state, six main stages are distinguished by analyzing the displacements of markers, fold hinges, long axes of boudins, granite dikes of various intrusion phases and kimberlites, as well as fractures with striations. For each of these stages, a dominatin… Show more
“…Irrespective of a series of faults which condition the block structure on a large scale [10], the diagrams show an approximately similar degree of the structural damage of rock mass. This implies the Catoca pipe area belongs in the structurally and lithologically uniform domain.…”
Section: Resultsmentioning
confidence: 93%
“…The eastern pitwall diagram (see fig. 2d), alongside with the described systems, contain a high-angle maximum matching the north-northwestern strike system (Set 3) formed at the final stages of the crustal stress evolution according to [10].…”
“…Irrespective of a series of faults which condition the block structure on a large scale [10], the diagrams show an approximately similar degree of the structural damage of rock mass. This implies the Catoca pipe area belongs in the structurally and lithologically uniform domain.…”
Section: Resultsmentioning
confidence: 93%
“…The eastern pitwall diagram (see fig. 2d), alongside with the described systems, contain a high-angle maximum matching the north-northwestern strike system (Set 3) formed at the final stages of the crustal stress evolution according to [10].…”
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